Is a pigtail grounding wire typically required with PVC non-metallic boxes?

In the context of PVC non-metallic boxes, a pigtail grounding wire is not typically required. PVC boxes are non-conductive, which means they do not provide a path for electrical current and are not liable to create a shock hazard like metallic boxes. Therefore, the grounding that would be necessary in metal installation situations does not apply in the same way for PVC.

While local codes and specific installation scenarios might dictate different requirements, the general understanding in electrical practice is that the need for grounding in non-metallic installations like PVC boxes is quite limited compared to their metallic counterparts. Factors such as the equipment being used and the specifics of the installation could lead to exceptions, but broadly, a pigtail grounding wire is not usually needed in these cases.